AU744770B2 - Audio codec with AGC controlled by a vocoder - Google Patents

Audio codec with AGC controlled by a vocoder Download PDF

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Publication number
AU744770B2
AU744770B2 AU17254/99A AU1725499A AU744770B2 AU 744770 B2 AU744770 B2 AU 744770B2 AU 17254/99 A AU17254/99 A AU 17254/99A AU 1725499 A AU1725499 A AU 1725499A AU 744770 B2 AU744770 B2 AU 744770B2
Authority
AU
Australia
Prior art keywords
digital
audio signal
gain
encoded
bits
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU17254/99A
Other languages
English (en)
Other versions
AU1725499A (en
Inventor
Wade L. Heimbigner
James A. Hutchison IV.
Louis D. Oliveira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of AU1725499A publication Critical patent/AU1725499A/en
Application granted granted Critical
Publication of AU744770B2 publication Critical patent/AU744770B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
    • H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
    • H03M1/183—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter
    • H03M1/185—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter the determination of the range being based on more than one digital output value, e.g. on a running average, a power estimation or the rate of change

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Analogue/Digital Conversion (AREA)
  • Dc Digital Transmission (AREA)
AU17254/99A 1997-12-12 1998-12-14 Audio codec with AGC controlled by a vocoder Ceased AU744770B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/989,743 US6233554B1 (en) 1997-12-12 1997-12-12 Audio CODEC with AGC controlled by a VOCODER
US08/989743 1997-12-12
PCT/US1998/026532 WO1999030421A1 (fr) 1997-12-12 1998-12-14 Codec audio a cag commandee par un vocodeur

Publications (2)

Publication Number Publication Date
AU1725499A AU1725499A (en) 1999-06-28
AU744770B2 true AU744770B2 (en) 2002-03-07

Family

ID=25535422

Family Applications (1)

Application Number Title Priority Date Filing Date
AU17254/99A Ceased AU744770B2 (en) 1997-12-12 1998-12-14 Audio codec with AGC controlled by a vocoder

Country Status (16)

Country Link
US (1) US6233554B1 (fr)
EP (1) EP1038358B1 (fr)
JP (1) JP4298160B2 (fr)
KR (1) KR100610134B1 (fr)
CN (1) CN1130023C (fr)
AR (1) AR015495A1 (fr)
AU (1) AU744770B2 (fr)
BR (1) BR9813482A (fr)
CA (1) CA2313219C (fr)
DE (1) DE69827162T2 (fr)
ES (1) ES2230736T3 (fr)
HK (1) HK1036166A1 (fr)
IL (1) IL136546A0 (fr)
NO (1) NO326176B1 (fr)
WO (1) WO1999030421A1 (fr)
ZA (1) ZA9811353B (fr)

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US6476745B1 (en) 1998-11-25 2002-11-05 Texas Instruments Incorporated Voice codec automatic gain control
US6252528B1 (en) * 1999-08-20 2001-06-26 Conexant Systems, Inc. System and method for variable gain coder-decoder
TW550948B (en) * 2001-07-04 2003-09-01 Leadtek Research Inc Audio/video IP camcorder
DE10216921A1 (de) * 2002-04-15 2003-10-23 Bosch Gmbh Robert Verfahren und Vorrichtung zum Auffüllen von Datenabschnitten sowie Bussystem
US7454331B2 (en) * 2002-08-30 2008-11-18 Dolby Laboratories Licensing Corporation Controlling loudness of speech in signals that contain speech and other types of audio material
KR101164937B1 (ko) * 2003-05-28 2012-07-12 돌비 레버러토리즈 라이쎈싱 코오포레이션 오디오 신호의 인식된 라우드니스를 계산 및 조정하는방법, 장치 및 컴퓨터 프로그램
KR100827226B1 (ko) * 2003-12-01 2008-05-07 삼성전자주식회사 아날로그 음향 신호를 디지털 데이터로 변환하는 장치 및방법
JP4629971B2 (ja) * 2003-12-11 2011-02-09 株式会社半導体エネルギー研究所 非直線ａ／ｄ変換されたデジタル信号対応のｄ／ａ変換回路及びそれを内蔵した音声信号処理回路及び表示装置
US8199933B2 (en) 2004-10-26 2012-06-12 Dolby Laboratories Licensing Corporation Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal
CN101048935B (zh) 2004-10-26 2011-03-23 杜比实验室特许公司 控制音频信号的单位响度或部分单位响度的方法和设备
BRPI0610719B1 (pt) * 2005-04-18 2015-11-24 Basf Ag preparação, processo para a produção da mesma, e, uso de preparações
JP5185254B2 (ja) * 2006-04-04 2013-04-17 ドルビー ラボラトリーズ ライセンシング コーポレイション Ｍｄｃｔ領域におけるオーディオ信号音量測定と改良
TWI517562B (zh) 2006-04-04 2016-01-11 杜比實驗室特許公司 用於將多聲道音訊信號之全面感知響度縮放一期望量的方法、裝置及電腦程式
AU2007243586B2 (en) 2006-04-27 2010-12-23 Dolby Laboratories Licensing Corporation Audio gain control using specific-loudness-based auditory event detection
WO2008051347A2 (fr) 2006-10-20 2008-05-02 Dolby Laboratories Licensing Corporation Traitement dynamique audio utilisant une réinitialisation
US8521314B2 (en) * 2006-11-01 2013-08-27 Dolby Laboratories Licensing Corporation Hierarchical control path with constraints for audio dynamics processing
CN101790758B (zh) * 2007-07-13 2013-01-09 杜比实验室特许公司 用于控制音频信号的信号处理的设备和方法
JPWO2009087923A1 (ja) * 2008-01-11 2011-05-26 日本電気株式会社 信号分析制御、信号分析、信号制御のシステム、装置、方法及びプログラム
WO2009113516A1 (fr) * 2008-03-14 2009-09-17 日本電気株式会社 Système et procédé d'analyse/contrôle de signal, dispositif et procédé de contrôle de signal et programme
JP5773124B2 (ja) * 2008-04-21 2015-09-02 日本電気株式会社 信号分析制御及び信号制御のシステム、装置、方法及びプログラム
US8140342B2 (en) * 2008-12-29 2012-03-20 Motorola Mobility, Inc. Selective scaling mask computation based on peak detection
CN102568480A (zh) * 2010-12-27 2012-07-11 深圳富泰宏精密工业有限公司 双模手机语音传输系统
CN102148607B (zh) * 2011-04-15 2016-03-30 昆腾微电子股份有限公司 用于放大器的增益控制装置和方法、电话机
US9124365B2 (en) * 2013-03-15 2015-09-01 Cellco Partnership Enhanced mobile device audio performance
US9425757B2 (en) * 2013-05-15 2016-08-23 Infineon Technologies Ag Apparatus and method for controlling an amplification gain of an amplifier, and a digitizer circuit and microphone assembly
EP3044876B1 (fr) 2013-09-12 2019-04-10 Dolby Laboratories Licensing Corporation Commande de gamme d'amplification pour une grande variété d'environnements de lecture
US9620134B2 (en) * 2013-10-10 2017-04-11 Qualcomm Incorporated Gain shape estimation for improved tracking of high-band temporal characteristics
GB2566164B (en) * 2016-02-19 2020-02-19 Imagination Tech Ltd Dynamic gain controller
GB2547459B (en) 2016-02-19 2019-01-09 Imagination Tech Ltd Dynamic gain controller
CN106023998B (zh) * 2016-05-27 2019-12-13 北京视觉世界科技有限公司 摄像头音频输入装置、去噪方法和摄像头
CN111583945B (zh) * 2020-04-30 2023-04-25 抖音视界有限公司 用于处理音频的方法、装置、电子设备和计算机可读介质
CN117793077A (zh) * 2024-02-23 2024-03-29 中国电子科技集团公司第三十研究所 通信系统及其软融硬音量调节方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012519A (en) * 1987-12-25 1991-04-30 The Dsp Group, Inc. Noise reduction system
US5117228A (en) * 1989-10-18 1992-05-26 Victor Company Of Japan, Ltd. System for coding and decoding an orthogonally transformed audio signal
US5677962A (en) * 1995-01-26 1997-10-14 Sony Corporation Hybrid analog and digital amplifier with a delayed step change in the digital gain

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100227452B1 (ko) * 1994-10-04 1999-11-01 비센트 비.인그라시아 스펙트럼 확산 통신 시스템에서 코히런트 통신 수신을 위한 방법 및 장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012519A (en) * 1987-12-25 1991-04-30 The Dsp Group, Inc. Noise reduction system
US5117228A (en) * 1989-10-18 1992-05-26 Victor Company Of Japan, Ltd. System for coding and decoding an orthogonally transformed audio signal
US5677962A (en) * 1995-01-26 1997-10-14 Sony Corporation Hybrid analog and digital amplifier with a delayed step change in the digital gain

Also Published As

Publication number Publication date
AU1725499A (en) 1999-06-28
NO326176B1 (no) 2008-10-13
JP2001526414A (ja) 2001-12-18
EP1038358A1 (fr) 2000-09-27
KR100610134B1 (ko) 2006-08-09
CA2313219C (fr) 2007-05-29
DE69827162D1 (de) 2004-11-25
KR20010032999A (ko) 2001-04-25
EP1038358B1 (fr) 2004-10-20
NO20002955L (no) 2000-08-10
NO20002955D0 (no) 2000-06-09
ZA9811353B (en) 2000-10-11
ES2230736T3 (es) 2005-05-01
HK1036166A1 (en) 2001-12-21
DE69827162T2 (de) 2005-10-20
WO1999030421A1 (fr) 1999-06-17
AR015495A1 (es) 2001-05-02
CA2313219A1 (fr) 1999-06-17
IL136546A0 (en) 2001-06-14
JP4298160B2 (ja) 2009-07-15
CN1291377A (zh) 2001-04-11
US6233554B1 (en) 2001-05-15
CN1130023C (zh) 2003-12-03
BR9813482A (pt) 2000-11-14

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